If I had a snake whose condition was listed as 'critical' I sure as anything would be fretting. I'd be stressing my head off, doing everything I could for my other snake to make sure he wasn't going to get sick as well. I'd be worrying over my birds and my rabbits (which I don't have, by the way) and my dog and the cats and my betta fish who doesn't understand why I'm fussing over him.
Maybe you don't have the right mindset to be a good pet parent.